Bryan tried to regain control of his aroused doggy instincts and set up a plan. There would be still some time till Katy would be at his parent's house so he would be able to think about the best way to make her join the transformed shepard pack.
He told his parents and his brother Alex to back off into some back room, which was fairly easy to do using his newly learned language of barks, facial expressions and scents. He was a dog now. No, he was more than a dog, as he was still thinking and planning.
Bryan had been transformed into a highly intelligent, transformation virus dealing, sex-crazed doggy predator - and his next victim would be a female... she would be his bitch.
Still some time till Katy would arrive...
Bryan opened the house's front door with his paws and muzzle, then he lay down on the carpet in the middle of the living-room, where every visitor would get into after passing through the door.
Bryan closed his eyes and inhaled the strong odors that were sucked in by his highly sensitive nose.
His cock had retreated into its furry sheat but it send tingling waves of arousal through Bryans body, telling him its prowess to get back into action soon.
Feeling at home more and more in his new black shepard body, Bryan kept lying on the carpet... and waited.
---
Katy jumped of her cycle and raced to the front door of Bryan's parent's house.
He'd told her to get to him as soon as possible. Something crazy had happened and he had to show it to her.
His mobile message hadn't be to clear, but it seemed urgent, so Katy had left her own parent's house only some minutes after she read it.
She was a very beautiful girl and a smart one, too. She thought about herself not to be that beatiful, but she liked her long, blonde hair and her still blossoming breasts.
At the age of 17 she was old enough to think about the future but her young and innocent life was far from over.
Katy had believed Bryan would be at the front door to await and greet her, but there was no sign of her boyfriend (which whom she only had exchanged some nice kisses so far...).
The door wasn't locked, so she pushed it open and entered the house's living-room.
A damp twilight darkened the room 'cause all shutters were drawn down to keep out the hot summer sun.
There was no sign of Bryan but Katy noticed a slight sound in the middle of the darkened room. Breathing...?
Moving forward slowly Katy entered the living-room some more steps.
The door swung close slowly, disconnecting the room from the outside.
Katy's eyes accustomed themselfes to the twilight and soon she was able to get a glimpse of what was breathing on the ground int he middle of the room. It was a ... dog!
Her heart skipped a beat because she'd thought of thousand other things she could have witnessed here ... dead or injured bodies and streams of red blood to only talk of one thing that came to her mind...
The dog seemed to be asleep.
It was a great black german shepard and it was a beautiful member of its kind. The fur was shiny and his body was shaped athletically.
The dog was lying on the ground and seemed not to have noticed her. He was lying on his back so his legs and paws were lifted into the air, which was a nearly funny sight as far as Katy minded. The shepard's furry tail wagged slightly and his stomach heaved and sinked with every breath he took. The furry sheat, which contained it's penis as Katy was told in biology class, looked ... okay ... too.
Dropping to her knees slowly (she did not like to anger the big dog, no way) she observed the great black animal. It was very beautiful and she thought about why it would be in here ... when had Bryan's parents bought it and brought it here?
Bryan! Katy had nearly forgotten about him but she wasn't able to think about him any more as the dog on the carpet in direct front of her seemed to wake up.
---
Bryan hadn't slept, but observed Katy's advance throughout the room very carefully with his nose and ears. She smelled of fear and had cleaned her neither regions throughly only some hours ago.
She smelled incredible and Bryan nearly lost control of his cock.
As she got closer he had played the role of a nice sleeping dog for some minutes but now it was time for action...
---
The dog opened his eyes and his tail swished against Katy's left leg.
Then he rolled over and laid his gleaming green eyes on her.
Katy was too surprised to react in any way, but her mind seemed to be sucked away as her eyes met those of the black animal.
"My..." she started but was interupted as the dog's long, leathery tounge lapped across her face, drowning her in doggy spit.
Katy gulped and jumped back a bit. She even sipped some of the dog's saliva and the taste filled her mouth. Her heartbeat increased quickly.
The dog was still lying in front of her, panting and observing her every step. It seemed as if he'd waited for her here all along. And now he seemed to wait for... something else...?
The dog stood up in one fluid movement and kept observing her all the time. His tail wagged slowly and he seemed to smile at her in a sick way no dog should have been able to.
Katy's only thought should have to be the desire to flee, but something very different washed trough her body now. She got aroused.
Instead of screaming and running she could not get herself to look away from the shepard. Her nipples were hardening slowly.
"What... are you..." she whispered, then her body was shaken by a wave of unbelievable erotic orgasms that washed througout her.
Her vagina wet itself with her bodie's lubricants and her fingers ripped open her blouse and bra. Her heaving breasts wre covered in sweat as she dropped to all fours.
What to hell was happening to her?!??
Katy's sense of smeel got increasingly better as her nose inhalated the scents of the black dog in front of her. He smelled like pure sex and Katy observed that his doggy cock grew out of his furry sheat slowly.
She could not believe the beauty of this long, red, slick and pointed canine cock and her hands were busy to release herself of her last clothes without her realizing it.
The dog positioned itself somewhat nearer to her and pushed his flank into her face's direction. The smell of the canine cock flooded Katy's mind once again and vanquished her human mind in one quick strike.
Katy was once again struck by one wave of orgasm and her feet kicked themselfes free of her socks, the last vestiges of human clothes on her body. She was sweating and breating very hard. Her nipples were errect, her vagina was very wet and screaming for this doggy meat to be buried inside of it.
Katy couln't think straight anymore as the virus started to rewrite her human DNA to that of a infected black shepard bitch. She was in heat and her body cried out to be fucked by the male in front of her.
Black fur started to sprout on Katy's back, starting from her inner tights and fastly covering her abdomen. Her fingernails shaped change to sharp claws and her face started to push out into a muzzle... and all the time wave after wave of orgasm hit her.
---
Bryan observed the doggy infection wash over his girlfriend's body as it shaped change to a form better suited to all those acts of erotic action he had in store for her.
His cock sent urges though his body as her scent changed from the sweet smell of a human female to that of a black shepard bitch in heat.
As her body was right in the middle of her transformation he did not think twice about what to do with her...